Gas-lighting device.



A. B. SHAW.

GAS LIGHTING DEVICE.

APPLICATION FILED AUG-27. 1914.

Patented July 27, 19 15.

AI B. SHAW, OF MEDFOJRD, MASSACHUSETTS.

GAS-LIGHTING DEVICE.

Specification of Letters Patent.

Patented July 2?, 1915.

1 Application filed August 27, 1914:. Serial No. 858,951.

To all whom it may concern Be it known that 1, AI l3. SHAW, a citizen of the United States of America, and a resident of Medford, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Gas-Lighting Devices, of which the following a specification.

-- Thi's'invention relates to devices for light ing' gas lamps, and particularly to lamps .stood byreference to the description of the vven.

Of the drawings: Figure 1 represents an elevation of a device embodying the features of the present invention. Fig. 2 represents a, vertical section through the valve mechanism. Fig. 3 represents an elevation of a portion of the same, showing the pilot drawings and to the claims hereinafter tube and its connection with the valve casing, and Fig. 4- represents a section of the controlling device. V

Similar characters designate like parts throughout the several figures of the drawln the drawings. 10 is a lamp of ordinary construction provided with a pilot burner 11 at the end of a tube 12 extending into the head of the member 13 threaded to the valve casing 14. This valve casing-14 consists of three parts, the body portion 15 of which is provided with a partition 16 and has threaded thereto the closing cap 17 and head 18. The head 18 is provided with a chamber 19 on one side of the partition 16 and the member 15 is provided with another chamber 20 is which is mounted the plunger 21 having stem 22 passing through a stuiling box 23 in the partition 16 and provided with a ball end 24 on which is secured a valve disk 25 adapted to oscillate in any direction thereon. The head 18 has a paspipe 27 from which gas is admitted to the chamber 19 at all times so that said chamber is constantly filled with gas. The head 18 is also provided with an outlet 28 communicating with a short pipe 29 leading to the main burner of the lamp 10. The outlet 28 has a valve seat 30 extending into the chamber 19 opposite j:o the valve disk 25 so that when the plunger 21 is moved to the right of Fig. 2 the disk 25 will be forced against the valve seat 30 and prevent the flow of gas to the lamp. The cap 17 is provided with the openings '31 communicating with a recess 32 in a member 33 secured to said cap by the screw 34. By loosening the screw 34 the member 32 may be rotated about'its axis.

An air tube 35 extends from the member 32 toan air chaanbeuilfi located at a distant point. A plunger 37 ispositioned in said air fromprovided with a head Elflby which said plunger may be moved in either direction. When the plunger 37 is forced into the inner end of the chamber 6 air will be forced through the tube 35 into the chamber 20 thereby forcing the plunger 21 toward the partition 16, the air in front of the plunger 21 being discharged. through the ventO. This movement of the plunger 21 will cause the valve disk 25 to contact with the seat 30 and close the outlet 28, thereby cutting off the supply of gas to the lamp except the supply passing through the tube 12 to the pilot burner 11. When the plunger 37 is moved outwardly into the position shown in Fig. 4, a suction will be created in the chambers 36 and 20 that will cause the plunger 21 to be moved into a position to open the outlet and permit further supply of gas to the lamp which will he ignited by the pilot burner 11. This makes a very simple and inexpensive device for "controlling the operation of gas lamps from a distance.

The operation and many advantages of this device it is believed will be fully apparent from the foregoing description.

Having thus described my invention, ll claim:

1. ln a device of the class described, the combination of a lamp, a member provided \vith'alincd inlet and out-lot openings separated by a partition and having an annular flange perpendicular to the axis of said openings forming a recessed chamber communicating by passages with said inlet and outlet openings; a supply pipe connected to chamber and has a stem 3&extending therelit) illi

lilo

said inlet opening;a pipe to the lamp extending from said outlet opening; a cupshaped member secured to said flange and closing said recessed chamber; a plunger in said cup-shaped member; a valve to close the outlet passage from said recessed chamber connected to said plunger; a closing cap for said cup-shaped member; and means for forcing air into and withdrawing it from said cup-shaped member behind said plunger. I

2. In a device of the class described, the combination of a l amp, a member provided with alined inlet and outlet openings separated by a partition and having an annular flange perpendicular to the axis of said openings forming a recessed chamber communicating by passages with said inlet and outlet openings; a supply pipe connected to said inlet. opening; a pipe to the lamp extending from said outlet opening; a cupshaped member secured to said flange and closing said recessed chamber; a plunger in said cup-shaped member; a valve to close the outlet passage from said recessed chamber connected to said plunger; a closing cap for said cup-shaped member provided with a plurality of perforations; a recessed member adjustably secured to the cap with its recess in constant register ,with said openings; an air tube leading to said recessed member; and means for forcing air through said tube and perforations and withdrawing said air therefrom.

3. In a device of the class described, the combination of a lamp; a pipe thereto from a, source of gas supply; a casing in said line of pipe having two alined chambers a source of gas supply; a casing in said line of pipe having two alined chambers therein perpendicular to the axis of said pipe and alined inlet and outlet openings separated from each other by a partition but both communicating by passages withfltheinner of said chambers; a valve in said inner chamber for closing the outlet passage and having a stem extending into the outer chamber; a reciprocating plunger in the outer chamber secured to said valve stem; a rotatable recessed member secured to the outer all of the outer chamber the recess of which is in constant communication with said chamber by a perforation in its wall;

a tube communicating with said recess; and means for forcing air into and withdrawing it bfrom said outer chamber through said tu e.

Signed by me at 4 Post Oiiice Sq., Boston,

Mass, this 7th day of August, 1914.

, v AI B. SHAW. Witnesses:

Emvaun F. ALLEN,

MARY C. Sar1'r1r.\ 

